package com.ruoyi.project.common;

import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.file.FileUploadUtils;
import com.ruoyi.common.utils.file.FileUtils;
import com.ruoyi.common.utils.file.QiniuUtils;
import com.ruoyi.framework.config.RuoYiConfig;
import com.ruoyi.framework.config.ServerConfig;
import com.ruoyi.framework.web.domain.AjaxResult;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.net.URL;

/**
 * 通用请求处理
 * 
 * @author ruoyi
 */
@RestController
public class CommonController
{
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;
    @Autowired
    private QiniuUtils qiniuUtils;

    @RequestMapping("/common/preview1")
    public void er(String filePath,HttpServletResponse response){
        File file = new File("C:\\Users\\wangli\\Desktop\\1627791093383.pdf");
        if (file.exists()){
            byte[] data = null;
            try {
                FileInputStream input = new FileInputStream(file);
                data = new byte[input.available()];
                input.read(data);
                response.getOutputStream().write(data);
                input.close();
            } catch (Exception e) {
                System.out.println(e);
            }

        }else{
            return;
        }

    }
    @ResponseBody
    @RequestMapping("/common/pdf/preview")
    public void findPdf(String filePath,HttpServletResponse response) throws IOException {
        response.setContentType("application/pdf");
        FileInputStream in = new FileInputStream(new File(filePath));
        OutputStream out = response.getOutputStream();
        byte[] b = new byte[512];
        while ((in.read(b))!=-1) {
            out.write(b);
        }
        out.flush();
        in.close();
        out.close();
    }

    @ResponseBody
    @RequestMapping("/common/preview3")
    public void devDoc(HttpServletRequest request, HttpServletResponse response, String storeName) throws Exception {
        request.setCharacterEncoding("UTF-8");
        String ctxPath = request.getSession().getServletContext().getRealPath("");
        String downLoadPath = "C:\\Users\\wangli\\Desktop\\1627791093383.pdf";
        response.setContentType("application/pdf");
        FileInputStream in = new FileInputStream(new File(downLoadPath));
        OutputStream out = response.getOutputStream();
        byte[] b = new byte[1024];
        while ((in.read(b))!=-1) {
            out.write(b);
        }
        out.flush();
        in.close();
        out.close();
    }

    @ResponseBody
    @RequestMapping("/common/preview2")
    public void download(String filePath,HttpServletResponse response) throws IOException {
//        String filePath = "G:\\桌面\\Thymeleaf3.0中文翻译文档@www.java1234.com.pdf";
        File f = new File(filePath);
        if (!f.exists()) {
            response.sendError(404, "File not found!");
            return;
        }
        BufferedInputStream br = new BufferedInputStream(new FileInputStream(f));
        byte[] bs = new byte[1024];
        int len = 0;
        response.reset(); // 非常重要
        if (true) { // 在线打开方式
            URL u = new URL("file:///" + filePath);
            String contentType = u.openConnection().getContentType();
            response.setContentType(contentType);
            response.setHeader("Content-Disposition", "inline;filename="
                    + f.getName());
            // 文件名应该编码成utf-8，注意：使用时，我们可忽略这句
        } else {
            // 纯下载方式
            response.setContentType("application/x-msdownload");
            response.setHeader("Content-Disposition", "attachment;filename="
                    + f.getName());
        }
        OutputStream out = response.getOutputStream();
        while ((len = br.read(bs)) > 0) {
            out.write(bs, 0, len);
        }
        out.flush();
        out.close();
        br.close();
    }

    /**
     * 通用下载请求
     *
     * @param fileName 文件名称
     * @param delete 是否删除
     */
    @GetMapping("common/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request)
    {
        try
        {
            if (!FileUtils.checkAllowDownload(fileName))
            {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = fileName.substring(fileName.indexOf("_") + 1);
            String filePath = RuoYiConfig.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete)
            {
                FileUtils.deleteFile(filePath);
            }
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 通用下载请求
     *
     * @param filePath 文件名称
     */
    @GetMapping("common/filePath/download")
    public void fileDownload(String filePath, HttpServletResponse response, HttpServletRequest request)
    {
        try
        {
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, filePath.substring(filePath.lastIndexOf("/")+1));
            FileUtils.writeBytes(filePath, response.getOutputStream());
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 通用上传请求
     */
    @PostMapping("/common/upload")
    public AjaxResult uploadFile(MultipartFile file) throws Exception
    {
        try
        {
//            qiniuUtils.uploadMultipartFile(file,file.getOriginalFilename());
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = serverConfig.getUrl() + fileName;
            AjaxResult ajax = AjaxResult.success();
            ajax.put("fileName", fileName);
            ajax.put("url", url);
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/common/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception
    {
        try
        {
            if (!FileUtils.checkAllowDownload(resource))
            {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = RuoYiConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }
}
